Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
  PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
• Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
  Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• Embedded URL info EMBEDDED_URL
  One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
  URL https://inwebjor.ru/uplcv?utm_term=chromatographie+sur+couche+mince+%28ccm%29+pdf PDF link annotation

  • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/9fd1a2ca82c9778d03d0db93f18ae556/gerewomed.pdfIn PDF document text
  • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/22ke69bonhofa3dkvs0aggbnn5/65833606419.pdfIn PDF document text
  • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/8576feccdc60992bfe031a04c8163e7c/lexevafetezosoti.pdfIn PDF document text
  • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/8sose6fldi4oh8vg3mt1i0ipo4/38735164942.pdfIn PDF document text
  • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a0eb83f546---mepedus.pdfIn PDF document text
  • https://affordans.com/ckfinder/userfiles/files/kidenelavasuluvimususono.pdfIn PDF document text
  • http://langmypham.com/luutru/files/15945090319.pdfIn PDF document text
  • http://agavietnam.com/img/files/83250419781.pdfIn PDF document text
  • http://akgikorea.com/file_upload/fck_upfile/file/84187394893.pdfIn PDF document text
  • http://ejmk.com/ej/upload/files/sobuxobu.pdfIn PDF document text
  • http://sutipatika.hu/userfiles/files/mepopeje.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/rra8garqakfsbk33411jqi60b5/17640711356.pdfIn PDF document text
  • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aad55cb030c---kowavexurajorilibar.pdfIn PDF document text
  • http://sevoir.hu/uploads/file/tisivaxiniluzoledoxamegig.pdfIn PDF document text
  • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160720281e6b98---45108039336.pdfIn PDF document text
  • http://3q1p.com/upload/file/210807185103765627yd55eg4zutdv.pdfIn PDF document text
  • http://niengrangchuyensau.com/upload/contentFile/file/xiredevitixujeribuk.pdfIn PDF document text
  • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/002e587a5507efc1479cd3e1cd2ce830/26597563096.pdfIn PDF document text
  • https://almondzwealth.com/administrator/imagetemp/file/8237575645.pdfIn PDF document text
  • https://anmimar.com/royal/userfiles/file/luzejisujobavanupizab.pdfIn PDF document text
  • http://coumert.com/images/file/fulosasenufiduzelur.pdfIn PDF document text
  • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160755e8fa940f---54100966361.pdfIn PDF document text
  • http://olddieselparts.com/ckfinder/userfiles/files/fuzuvuwakorofoxewu.pdfIn PDF document text
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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